Combined gate and globe valve reseating machine.



Na. 682,368. Patented se t lo F. L. SMITH. p 9m' COMBINED GATE AND GLBEVALVE RESEATING MACHINE. l

(Application filed Nov. 28, 1900.)

(No Model.)

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V=1=======saiiii|u| IIIIIlllll[imlllllllllllllllllllllllllllllgraag-Jes: rJzz/e .07- WLM @QSM Amm l im Patented Slept. I0, I90l. F. L.SMITH. GUMBINED GATE AND GLOBE VALVE BESEATING MACHINE.

(Application filed Nov. 28, 1900.)

3 Sheets-Sheet 2l (No Model.)

an Z M m IK f I1 L m IH WIM@ W A WH 6 MM Il ,J m 6- y F F/ v1 2n WM Q ll, f f w/L 1. j N2@ f Y f W il N0. 682,368. Patented Sept. l0, l90l. F.L.. SMITH.

GMBINED GATE AND GLBE VALVE RESEATING MACHINE.

(Application and Nov. 2s, xeno.) (No lodel.) 3 Sheets-Sheet 3:.

WITNESSES; W @Ww W A TTORNE XS UNTTED STATES PATnNT Cerros'.

FRANK L. SMITH, or OHIOAGO, ILLINOIS, AssIeNoR or ONE-HALF To ALvA o.RIOKSEOKER., or SAME PLACE.

COMBINED GATE AND GLOBE VALVE RESEATING MACHINE.

SPECIFXGATION forming part of Letters Patent No. 682,868, datedSeptember 10, 190i. Application tiled November 28, 1900. Serial No.37,954. (No model.)

To @ZZ whom t may concern:

Be it known that I, FRANK L. SMITH, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois,

have invented certain new and useful Improvements in a Combined Gate andGlobe Valve Reseating Machine, of which the following is aspecification, reference being had to the accompanying drawings, forminga 1o part thereof.

The purpose ofvthis invention is to provide z5 adjustable shaft-bearing,the section being made in the plane denoted bythe line 2 20n Fig. l.Fig. 3 is a plan of a bracket-plate for receiving the adjustableshaft-bearing, adapted to be mounted either upon the head, 3o as shownin theassembled machine in Fig. l, or on the valve-body in thepipe-line. Fig. 4 is an axial section of a tool or chuck holder, with anadjustable bearing and the plate which holds it. Fig. 5 is a detail sideelevation of a portion of the angularly-adjustable shaft-bearing. Fig. 6is a detail section at the line 6 6 on Fig. 5. Fig. 7 is a plan oftherotatable element of the sleeve which constitutes part of the adjustableshaft-bearing. 4o Fig. 8 is an elevation of a swiveled tool-stand ard,partly shown in vertical section through the swivelaxis. Fig. 9 is asection at the line 9 9 on Fig. 8, broken away in part and shown inhorizontal section at the line 9n 9 on said Fig. 8. Fig lO is an axialsection of the tool-holder to be held in the upper part of the standardshown in Fig. 8. Fig. ll is a detail vertical section at the planedenoted by the line 1l ll on Fig. l. Fig. l2 is a View o in axialsection of a globe-valve having my improved device for dressing the seatshown in elevation mounted thereon in position for work in the seat.Fig. 13 is a detail side elevation of the crank-hub. Fig. 14 is aperspective ofa nut or clamping block WV for securing the tool-holder tothe bed.

My improved machine when all its parts are assembled, as shown in Fig.l, for the purpose of certain sorts of Work for which it is adaptedcomprises a base-frame A, upon 6o which there is mounted asupporting-head B for a dead-centerand a head or bracket C forsupporting a livecenter or rotatable shaft; also on this base-framethere is supported a swivel-mounted standard D for holding atransversely-operating chuck or tool. The rotatable shaft mounted on thebracket C is provided with an adjustable bearing and with its saidbearing is designed to be used either as shown in Fig. l, mounted in the7o bracket on the baseframe A, or mounted directly in the valve-body onthe pipe-line, for the purpose of truing up the valve-seat in such body.I will first describe the construe tion of this part of my invention.

Referring to Fig. 4, E represents a bracketplate, also seen in Figs. land 2, having a central threaded aperture E, and in diametric linetherewith slots E2 E2, by which itis adapted to be mounted either uponthe back of 8o the bracket C, as shown in Figs. l and 2, or directlyupon a valvebody in the pipe-line, as shown in Fig. l2. H H represent atwo-part collar, of which the outer part is provided with an exteriorthread and is adapted to be screwed into the aperture E of the plate E.This collar has its aperture Widely enlarged at the outer end andtapering toward the inner end, and at the Outer end there is seated init in a manner to be rotated about its 9o axis the other part H of saidcollar. Said part H' of the collar has an Oblong aperture H10, and onits outer face is channeled in the direction of the greatest dimensionofthe Oblong aperture, such channel being bounded by the ribs orshoulders H11 H11, whose faces are cylindrically curved about an axisparallel with the plane of rotation of the part H and to a line thereintransverse to the longer dimension of the oblong aperture. ico Theradius of such curvature is such that when the two parts of the collarare assembled, as in Fig. 4, the axis of curvature intersects the axisof the collar at some distance inward from the inner end ot the latter,and said inner end of the collar is spherically curved about the pointof intersection of said axis of cylindrical curvature with the axis ofthecollar. Gisasleevewhichextendsthrough the collar and constitutes abearing for the rotatable shaft F, which extends through the sleeve,protruding therefrom at both ends. The sleeve has at its inner end an'enlarge- 'ment or boss G', Whichis stopped against the innerspherically-curved end of the collar and is correspondinglysphericallycurved on its face, abutting against said end of the collar.J is a collar lodged and adapted to move longitudinally on thebearing-sleeve G at the outer end of the tivo-part collar H H anddesigned to constitute a stop for said sleeve opposite to the stopafforded by the boss G', s'o that the sleeve may be held between saidtwo stops. K is a nut which is screwed onto the sleeve outside thestopcollar J, the sleeve being threaded suitably for that purpose. Thisnut serves to force and bind the stop-collar J against the outerrotatable element Hl of the two-part collar and so bind the two partstogether rigidly and also at the same time bind them rigidly to thebearing-sleeve. From this construction it will be understood that thebearingsleeve and shaft therein maybe oscillated in an arc about theaxis of the cylindrical curve of the exterior face of the ribs of thepart H', and that by rotating said part H with respect to the part H ofthe two-part sleeve such oscillation may take any path radial to theaxis of the sleeve, so that there is thus provided perfect adjustabilityfor the bearing-sleeve and shaft within the range of a certain limitedsegment of a sphere whose center is the center of spherical curvature ofthe inner end of the sleeve, thus permitting the angular variation ofthe direction of the rotatable shaft within such range. Fora moreaccurate control and guidance of the bearingsleeve in such adjustmentthe stop-collar J has projections J J taking down into the channelbetween the cylindrieallycurved ribs H11, as seen in Figs. 4 and 6, sothat when the rotatable part H of the collar has been set at any givenposition with respect to the Iixed part the shaft may be oscillatedaccurately in the plane thus determined about the axis of thecylindrical curve without incurring risk of deiection from that planewhile such angular adjustment is being made. For the purpose ofadvancing and retracting the shaft F longitudinally through thebearing-sleeve the sleeve has an exteriorly-threaded element L, adaptedto be made rigid with it, and a feeding-sleeve M, mounted on thebearing-sleeve G, is enlarged and interiorlythreaded at one end toengage the thread of the element L, said feeding-sleeve M having at theouter end a stop-flange M2, which communicates with a stop-shoulderF onthe shaft ceases F to force the shaft longitudinally forward when thefeeding-sleeve M is rotated :in one direction and permit it to beretracted when the sleeve is rotated in the opposite direction. A partN, which constitutes a hub for a crank N2, by which the shaft F may berotated, serves also as a stop against which the feeding-sleeve Moperates in the reverse direction to retract the shaft F. In order thataquick adjustment of the shaft F may be made lon'- gitudinally whendesired, the element L is made in the form of a collar which slides onthe sleeve G and is provided with a setscr'ew Z to secure it 'at anydesired position, so that by loosening the set-screw the collar L andfeed-sleeve M may be caused to slide together on the bearing-sleeve G tomake an approximate adjustment of the shaft longitudinally, theset-screwl being then fastened. Final or accurate adjustment and thecontinuous ad- Vance feed movement which may be required by the work maybe made by the operator rotating the seat-sleeve M as the workprogresses or as such adjustment has to be made. The crank-hub N isattached to the shaft F by being screwed thereonto, and said threadedconnection is made secure by means of a stop and adj listing-screw N',which is set in axially through the hub from the outer end and may bereached by withdrawing the crank, which is inserted through a transverseaperture n in the hub N and retained by a set-screw n2, which is alsoremoved in order to get access to the head of the stop andadjusting-screw N. In using this device to dress the seat of a valve ina pipeline, the cap of the valvebody being removed, the bracl et-plate Eis lodged upon the valve-body in the position occupied by the cap andwith its slots E2 E2, if possible, in position to be secured by two ofthe screws which secure the cap to the body, or, if none of the screwsare precisely in the position required for that purpose, in suchposition that a clamping-block which may be held by such screws may belodged at each end across the slots E2, respectively, and may be made tobind the bracket-plate rigid with the valve-body by tightening thescrews which have held the cap. However, before thus securing thebracket-plate the nut K will be loosened, so as to leave thebearingsleeve G free to take any angular position in the two-part collarwhich may be necessary, and the set-screw Z being loosened the shaft Fis left free to take any position longitudinally in the sleeve which maybe necessary. With all the parts thus loose and free the tool which maybe mounted upon the inner end of the shaft F and which will have beenselected to correspond as nearly as may be with the face of thevalve-seat as to its taper, if it is tapered, or to a flat face, whenthat is the form, can be brought into a position with respect to thevalve-seat at which it may operate thereon to true it up with the leastcutting away ot' the seat-that is, it may be centered with respect tothe axis of the valve-seat and in- IIO clined, if necessary, in anydirection to accommodate it to any inclination of the axis of the seatwith respect to the plane of the outer face of the valve-body upon whichthe bracketplate E is secured. When the parts are thus brought intoproper relation, the bracketplate will be bound tightly onto thevalve-body and the stop-nut K will be tightened against the stop-collarJ, thus binding the two parts of the sleeve H H together and bindingthem both rigid with the driving-sleeve G. The set-screw l being nowtightened, the crank may be rotated to operate the tool and dress thevalve as desired, the tool being advanced to its work,` as may benecssary, by rotating the sleeve M. If for any purpose it is necessaryor desirable to maintain the axis of the shaft F at right angles to theplane of the outer face of the valve-body to which the bracket-plate Eis secured or to maintain it at any other angle thereto, properadjustment may be made by means of a graduated scale (shown at H12 andL2) on the side of one of the ribs 4I-ll1 and on the side of thestop-collar J, as shown in Fig. 5. It will be understood that it is notnecessary to make the graduated scale upon both parts, a merereading-point or index-point on one of them being sufficient if thescale is on the other; but the scale may be made upon both parts, asshown, any one of the scale-marks, as the zero-poin t, for example, onone scale serving as the reading or index point, against which thereading on the other scale may benoticed.

The entire device shown in Fig. 4- may be employed in the machine shownin Fig. l, either a chuck or a cutter-head for operating upon the workbeing secured to the inner end of the shaft F. In such use thebracket-plate E maybe secured to the bracket C in the same manner as itwould be secured to the body of the valve in the use already described,or in case of a tool of a larger size being used the bracket-plate E maybe dispensed with and the fixed member H of the two-part collar may bescrewed directly into the aperture C of the bracket C, said aperturebeing interiorly threaded, as shown, for that purpose. This inode ofusing the device (with or without the plate E) is most frequentlyresorted to for the purpose of dressing valves, which for that purposemaybe withdrawn from the valve-body and held in a chuck secured to theend of the shaft F, the dressing-tool being in that case operatedtransversely with respect to the axis of the shaft F. For this purposethere is provided the swivel-mounted standard D, whose base plate Oextends across the hase-frame A and is secu red theret0 in any suitablemanner for securing a toolhead to a lathe, adapting it to be adjustedboth longitudinally and transversely with respect t'o the bed-that is tosay, a bolt o, taking through the slot O in the base-plate O, engages across-bar IV, which extends across the side bars of the hase-frameunderneath the same and has an oblong rectangular boss NV protruding upbetween said side bars, and protruding up from the bars W a rectangularboss lW2, entering the slot O and centrally apertured and threaded toreceive the bolt, whose head o', protected by a suitable washer o2, isengaged above the base-plate O. The swivel-mounting of the standard D iseffected by providing a vertical spindle O10, extending up from thebase-plate O, which is counterbored around such spindle, forming 'asocket O2, the standard having an axial bore from the bottom upward toreceive the spindle O and having atits lower end a Wormgear D', maderigid therewith and constituting a iiange thereon which is adapted to bereceived in the socket of the base-plate when the standard is fastenedonto the spindle. A lateral recess O20, extending from the socket O2,accommodates a Worm-shaft Q, which is suitably journaled in thebase-plate, having its Worm engaging the worm-gear flange of thestandard D and provided outside the baseplate with an operating-handleQ. An annular cap or retaining-plate d, centrally apertured to fit thelower portion of the standard D above the flange D', is arranged to besecured to the base-plate O and constitute a cap to close the cavity inwhich the worm-shaft and worm-gear are lodged, and at the same time aretaining-plate under which the Wormgear flange being engaged retainsthe standard in place on the base-plate. At the upper end of thestandard D there is a split bearing D3 to receive thetransversely-extended toolholder sleeve R,Which,being inserted throughthe aperture of the bearing D3, is tightly secured therein by clampingthe same together by means of the vnut D30. In the tool-holder sleeve Rthe tool-holder Sis adapted to be accurately seated and longitudinallymoved,the tool-holder being axially apertured and interiorly threaded tobe engaged bythe feedscrew P, whose stem or shaft extends out throughthe otherwise closed end of the tool R and receives an operating-handleP. The tool X is inserted transversely through the tool-holderS near oneend and is held rigidly in such position by means of the set-screw Q,screwed into the end of the tool-holder and impinging against the tool,as seen in F'ig. 10. The tool protrudes through the slots R' R atoppositesides of the tool-holder sleeve R, said slots being of suitablelength to allow for the maximum advance and retraction of the toolholderand tool effected by rotating the feedscrew I). It will be understoodthat by means ot' the worm-shaft Q the swiveled standard may be rotatedto adjust it about the swivelaxis to cause the axis of the tool-holder,which is mounted transversely in the upper end of the standard, toextend at any angle desired With respect to the length of the bed orbase frame A or shaft F, and the tool may thus be caused to advanceaccurately across t-he face of a valve, either fiat or tapering at anyangle in either direction. In order that the tool may be set accuratelyat any desired angle,

IOO

IIO

ard so placed that it will register with zero of the graduated scalewhen the axis of the tool-holder is directly transverse to the length ofthe bed or base frame and to the axis of the two-part collar H I-I", thegraduated scale being extended in both directions from such zero-point,so that deviation from such direct transverse line in either directionmay be accurately produced and noted. The adjustability of thebearing-sleeve G in horizontal plane may to an extent serve the samepurpose as the adjustability of the standard D about its swivel-axis,and any desired angle which it may be desired to produce between thesetwo may be made by partial adjustment of each, and by this means oftengreat increase of convenience in doing the work is obtained. For specialsituations or for dressing valves of special forms it may be founddesirable sometimes to utilize a vertical angular adjustment of theshaftF in connection with a horizontal angular or oblique adjustment ofthe tool-holder S.

It will be noticed that theform of connection described between thebearing-sleeve G and the two-part collar H H is such as to constitutebetween these parts a universal joint with a limited range. Suchuniversal-joint connection I regard as an important feature of myinvention, and I do not limit myself strictly to the specific modeherein shown of obtaining such universal joint. Any mechanic willreadily devise other means for the same purpose. Nevertheless, thepartie ular structure shown has specific advantages already pointed outand is for that reason claimed specifically.

I claiml. A valve-reseating machine, comprising a rotatable shaftadapted at one end to carry a tool and provided at the other end withmeans for rotating it; a bearing in which the shaft is journaled; asupport for the bearing in which the latter is adjustable angularly; andcorresponding stops on the support and bearing, cur-ved about a centerlocated beyond them in the direction of the tool-holding end of theshaft; and means for making the bearing rigid with its support.

2. A valve-reseating machine, comprising a rotatable shaft, a sleeve inwhich the shaft is journaled, a collar through which the sleeve extendsloosely, affording range for change of axial direction of the shaft andsleeve relative to the collar; stops on the sleeve at opposite ends ofthe co1lar,and means for clamping the collar between the stops.

3. A valve-reseating machine, comprising a rotatable shaft, a sleeve inwhich the shaft is journaled, a collar through which the sleeve extendsloosely, adording range for change of axial direction of the shaft andsleeve relative to the collar, the collar having its opposite endsconcentrically curved; stops on the sleeve at opposite ends of thelcollar; and' means for making the sleeve rigid with the collar.

4. A valve-reseating machine, comprising a rotatable shaft, abearing-sleeve in which the shaft is j ournaled, a collar th rough whichthe sleeve extends loosely, adording range for change of axial directionof the shaft and sleeve relative to the collar, the collar having itsopposite ends concentrically curved, and stops on the sleeve at oppositeends of the collar.

5. A valve-reseating machine, comprising a rotatable shaft, a sleeveinwhich the shaft isjournaled, a collar through which the sleeve extendsloosely, affording range for change of axial direction of the shaft andsleeve relative to the collar; said collar having its opposite endscurved about a common center located in the line of the axis; stops onthe sleeve at opposite ends of the collar, and means for making thesleeve rigid with the collar.

6. A valve-reseating machine, comprising a rotatable shaft, a sleeve inwhich the shaft is j ournaled,a collar through which the sleeve extendsloosely, affording range for change of axial direction of the shaft andsleeve relative to the collar, stops on the sleeve at opposite ends ofthe collar, one of said stops being movable on the sleeve toward andfrom the collar, and means for forcing and securing it against thecollar, to clamp the latter between the stops.

7. A valve-reseating machine, comprising a rotatable shaft, a sleeve inwhich the shaft is j ournaled,a collar through which the sleeve extendsloosely, affording range for change of axial direction of the shaft andsleeve relative to the collar, said collar having its opposite endsconcentrically curved; stops on the sleeve at opposite ends of thecollar, one of said stops being movable on the sleeve toward and fromthe collar; and means for forcing and securing it against the collar toclamp the latter against the stops.

8. A valve-reseating machine, comprising a rotatable shaft; a sleeve inwhich the shaft is journaled a two-part collar through which the sleeveextends loosely, one part having an aperture enlarged in all directionsfrom the axis, and the other having an oblong aperture and adapted to berotated about the axis with respect to the first part; and means formaking the two parts of the collar rigid with each other and with thesleeve.

9. A valve-reseating machine, comprising a rotatable shaft, a sleeve inwhich the shaft is journaled, a two-part collar through which the sleeveextends loosely, one part having an aperture'enlarged in all directionsabout the axis, and the other having an oblong aperture and adapted tobe rotated about the axis with respect to the first part; stops on thesleeve at opposite ends of the collar, one of said stops being movableon the sleeve toward and from the collar; and a nut screwed IIO on thesleeve outside the movable stop, to force and secure it against thecollar between the stops.

l0. Avalvereseating machine, comprising a rotatable shaft; a sleeve inwhich the shaft is journaled; a collar through which the sleeve extendsloosely, affording range for change of axial direction of the collar andsleeve relative to the collar; said collar havin g its opposite endsconcentrically curved stops on the sleeve at opposite ends of thecollar, one of said stops being movable on the sleeve toward and fromthe collar; and a nut screwed on the sleeve outside the movable stop toforce and secure it against the collar to clamp the latter between thestops.

1l. Avalve-reseating machine, comprising a rotatable shaft; a sleeve inwhich the shaft is journaled; a two-part collar through which the sleeveextends loosely, one parthaving an aperture enlarged in all directionsaboutJ the axis, and the other having an oblong aperture and adapted tobe rotated about the axis with respect to the rst part; stops on thecollar at opposite ends of said two parts of the latter, one of saidstops being movable on the sleeve toward and from the collar; and meansfor forcing and securing it against the collar to clamp the latterbetween the stops.

12. Avalve-reseatiug machine, comprising a rotatable shaft; a sleeve inwhich the shaft is journaled; a two-part collar through which the shaftextends loosely, one part having an aperture enlarged in all directionsabout the axis, and the other having an oblong aperture and adapted tobe rotated about the axis with respect to the first part; said rotatablepart being curved cylindrically about an axis parallel to the plane ofits rotation and to a line therein at right angles to the longerdimension of the oblong aperture; stops on the sleeve at opposite endsof the two-part collar,

' the stop at the end of the cylindrically-curved rotatable part beingcorrespondingly curved; and a nut on the sleeve for clamping said stopagainst the cylindrically -curved member of the sleeve.

13. A valve-reseating machine, comprising a rotatable shaft; a sleeve inwhich such shaft is journaled; a two-part collar through which thesleeve extends loosely, one part having an aperture enlarged in alldirections about the axis, and the other having an oblong aperture andadapted to be rotated about the axis with respect to the first part, andbeing at the outer side-which constitutes the end of the sleeve-curvedcylindrically and chan- .neled in the direction of the longer dimensionof its oblong aperture; stops on the sleeve at opposite ends of thetwo-part collar, the stop at the cylindricallycurved end of therotatable part being correspondingly curved and adapted to be engaged inthe channel, whereby it is rotated with the rotatable member, and seatson the cylindricallycurved face of the latter at all angular adjustments of the same.

14. A valve-reseating machine, comprising a rotatable shaft; asleeve inwhich such shaft is jou rnaled; a two-part collar through which thesleeve extends loosely, one part having an aperture enlarged in alldirections about the axis, and the other having an oblong aperture andadapted to be rotated about the axis with respect to the iirst part, andbeing at the outer side-which constitutes the end of the sleeve-curvedcylindrically in the direction of the longer dimension of the oblongaperture; stops on the sleeve at opposite ends of the collar, the stopon the end of such cylindrically-curved part being correspondinglycurved, and a nut on the sleeve for clamping said stop against thecollar.

15. A valve-reseating machine, comprising a rotatable shaft; abearingsleeve in which said shaft is journaled; said bearing-sleevehaving rigid with it an exterior-threaded element; a threadedfeeding-sleeve journaled on the bearing-seat outside the latter andengaging the thread of the threaded element of the bearingsleeve,rotatable with respect thereto, and havinga stop-shoulder; the shafthaving a corresponding shoulder stopped against that of thefeeding-sleeve; means for holding the bearing-sleeve rigid; and meansfor rotating the shaft.

16. A valve-reseating machine, comprising a rotatable shaft; abearing-sleeve in which the shaft is journaled, said bearing havingrigid with it an exterior element exteriorly threaded; athreadedfeeding-sleeve journaled on the bearing sleeve, outside the latter,screwed about said threaded element of the bearing-sleeve, rotatablewith respect thereto, and having a stop-shoulder; the shaft having acorresponding shoulder stopped against that of the feeding-sleeve; meansfor holding the bearing-sleeve rigid; and means for rotating the shaft.

17. A valve-reseating machine, comprising a rotatable shaft; a bearingin which the shaft is journaled; a sliding collar on the bearing, andmeans for making it rigid with the latter, said collar being threaded; athreaded feeding sleeve journaled on the bearingsleeve outside the samescrewed to said collar, rotatable with respect thereto, and having astop-shoulder; the shaft having a corresponding shoulder, stoppedagainst that of the feeding-sleeve; means for holding the'bearing-sleeve rigid; and means for rotating the shaft.

18. A valve1eseating machine, comprising a rotatable shaft; abearing-sleeve in which the shaft is journ aled; a collar through whichthe sleeve extends loosely, said collar being at one end exteriorlycurvedand widely apertured to permit change of the axial direction ofthe sleeve with respect to the collar; stops on the sleeve at oppositeends of the collar, the stop at the curved end of the collar beingcorrespondingly curved to seat on such curved end; one of the stopsbeing movable with respect to the shaft, and means IOO for forcing andholding it toward thevother stop to bind the collar between the stops.

19. A valve-reseating machine, comprising a rotatable shaft; abearing-sleeve in which the shaft is journaled; a collar through whichthe sleeve extends loosely; stops on the sleeve at opposite ends of thecollar; said collar being at one end exteriorly threaded and Widelyapertured to permit change of theaxial direction of the sleeve inrespect to the collar, the sleeve at that endbeing correspondinglycurved to seat on the curved end of the collar; said collar and stopbeing graduated in the arc of such curvature to indicate the angulardisplacement of the sleeve from any assumed initial position.

20. A valve-reseating machine, comprising a rotatable shaft; a bearingin which the shaft is journaled; a collar through which the sleeveextends loosely; stops on the opposite ends of the collar, the collarbeing at one end exteriorly threaded and Widely apertured to permitchange of the axial direction of the sleeve in respect to the collar,the stop at that end being correspondingly curved to Seat on the curvedend of the collar; said collar and stop being graduated in the are ofsuch curvature to indicate the angular displacement of the sleeve fromany assumed initial position; one of the stops being movable on thesleeve toward and from the collar, and means for forcing and securing itagainst the collar lo clamp the latter between the stops. f

2l. A Valvereseating machine, comprising a rotatable shaft; abearing-sleeve in which the shaft is journaled; a two part collarthrough which the sleeve extends loosely; stops on the sleeve atopposite ends of the collar; one part of the collar being seated on androtatable with respect to the other, said other part being, at the endat which the first part is seated, Widely apertured in all directionsabout the axis, the first part having its outer end curved about an axisparallel to the plane of rotation, and having an oblong aperture whosegreater dimension is in a plane at right angles to the axis of suchcurvature; the stop at that end being correspondingly curved to seat onthe curved end of the collar; said collar and stop being graduated inthe arc of such curvature to indicate the angular displacement of thesleeve from any assumed initial position.

22. A valve-reseating machine, comprising a rotatable shaft; abearing-sleeve in which the shaft is jonrnaled; a two part collar,through which the sleeve extends loosely; stops on the sleeve atopposite ends of the collar, one part of the collar being seated on androtatable with respect to the other, said other part being, at the endat which such part is seated, Widely apertured in all direcright anglesto the axis of such curvature, the stop at that end beingcorrespondingly curved to scat on the curved end of the collar, andseated also on the sleeve; the collar and said stop having cooperatingfeatures for guiding the stop and thereby the bearing-sleeve on which itis seated, in the direction of the longer dimension of the oblongaperture.

23. A valve-reseating machine, comprising a rotatable shaft; abearing-sleeve in which the shaft is journaled; a two part collarthrough which the sleeve extends; stops on the sleeve at opposite endsof the collar, one part of the collar being seated on and rotatable withrespect to the other, said other part being, at the end at which thefirst part is seated, widely apertured in all directions about the axis;the first part having its outer end curved about an axis parallel to theplane of its rotation, and having an oblong aperture whose greaterdimension is in a plane at right angles to the axis of such curvature;means for guiding the sleeve laterally in such oblong aperture, andmeans for clamping the sleeve between the stops. y

24. Avalve-reseating machine, comprising a rotatable shaft;abearing-sleeve in which the shaft is journaled; a collar through whichthe sleeve extends loosely, the collar being at one end exteriorlycurved and widely apertured to permit change of the axial direction ofthe sleeve in respect to the collar, the stop at that end beingcorrespondingly curved to seat on the curved end of the collar, andbeing seated 4also on the sleeve; the collar and said slot havingcooperating features for guiding the stop and thereby the bearing-sleeveon which it is seated in the direction of the longer dimension of theoblong aperture.

25. A valve-reseating machine, comprising a rotatable shaft; abearing-sleeve in which the shaft is journaled; a collar through whichthe sleeve extends loosely, the collar being at one end exteriorlycurved and Widely apertured to permit change of the axial direction ofthe sleeve in respect to the collar, the stop atthat end beingcorrespondingly curved to Seaton the curved end of the collar, and beingseated also on the sleeve; the collar and said sleeve having cooperatingfeatures for guiding the stop and thereby the bearing-sleeve on which itis seated in the direction of the longer dimension of the oblongaperture; and being graduated in the arc of such curvature to indicatethe angular displacement of the sleeve from any assumed initialposition.

26. A valve-reseating machine, comprising4 IOO IIC

of the universal joint rigid with each other; and means for rotating theshaft.

27. A valve-reseating machine, comprising a base-frame; an aperturedbracket mounted p thereon; a rotatable shaft; a universal joint,comprising an inner and an outer element of which the former constitutesthe bearing of the shaft and penetrates the latter and the latterpenetrates the bracket and is adapted to be made rigid therewith; meansfor rotating the shaft; a standard swivel-mounted on the base-frainegmeans for rotating it about its swivel-axis; a sleeve adjustably securedin the standard transverse to the swivel-axis; a spindle longitudinallyguided in the sleeve; and means for advancing and retracting it.

28. A valve-reseatin g machine, comprising a base-frame; an aperturedbracket therein; a collar penetrating the bracket and adapted to be maderigid therewith; ahearing-sleeve extended through the collar, the latterbeing apertured to afford the sleeve a range for changeof axialdirection; means for making the bearing-sleeve rigid with the collar; aro* tatable shaft journaled in the bearing-sleeve; means for rotatingthe shaft in the sleeve; a standard swivel-mounted on the base-frame;means for rotating it about its swivel-axis; a sleeve adjustably securedin the standard transverse to the swivel-axis; a spindle longitudinallyguided in the sleeve; and means for advancing and retracting it.

29. A valve-reseating machine, comprising a base-frame; an aperturedbracket mounted thereon; a collar penetrating the bracket and adapted tobe made rigid therewith; the bearing-sleeve extending through thecollar, the latter being apertured to afford the sleeve a range forchange of axial direction, and means for making the bearing-sleeve rigidwith the collar; a rotatable shaft j ournaled in the bearing-sleeve;means for rotating the shaft in the sleeve, a standard swivel-mountedand also adapted to be horizontally adjusted on the base-frame; meansfor rotating it about its swivel-axis; a sleeve adjustably secured intheV standard transverse to the swivel-axis; a spindle longitudinallyguided in the sleeve, and means for advancing or retracting it.

30. A valve-reseating machine, comprising a base-frame; an aperturedbracket mounted thereon; a collar penetrating the bracket and adapted tobe made rigid therewith; a bearing-sleeve extending through the collar,the latter being apertured to afford the sleeve a range for change ofaxial direction; and means for making the bearing -sleeve rigid with thecollar; a rotatable shaft journaled in the bearing-sleeve, and means forrotating it in the sleeve; a standard,comprising a baseplate and anupright vertically journaled in the plate and provided With a horizontalWorm gear; a Worin-shaft, journaled in the base-plate and engaging thegear to rotate the upright about the swivel-axis; a sleeve adj ustablysecured in the upright transverse to the swivel-axis; a spindlelongitudinally guided in the sleeve; and means for advancing andretracing it.

31. Avalve-reseating machine, comprising a base-frame; an aperturedbracket mounted thereon; a collar penetrating the bracket and adapted tobe made rigid therewith; the bearing-sleeve extending through thecollar, the latter being apertured to afford the sleeve a range forchange of axial direction, and means for making the bearing-sleeve rigidwith the collar; a rotatable shaft journaled in the bearing-sleeve; andmeans for rotating the shaft in the sleeve; a standard, comprising abase-plate having an upstanding spin* die, and a socket about the baseof the spindle; an upright having an axial aperture to receive thespindle and a flange constituting a worm-gear lodged in the socket; awormshaft journaled in the base and engaging the worm-gear ange; anannular cap which is secured on the base and covers the socket inclosingthe Worm-shaft and worm-gear iiange and at Whose central aperture avertical journal-bearing is afforded for the standard; a sleeveadjustably secured in the standard, transverse to the swivel-axis; aspindle longitudinally guided in the sleeve; and means for advancing andretracting it.

82. A valve-reseating machine, comprising a base-frame; an aperturedbracket mounted thereon; a rotatable shaft; a universal joint,comprising an inner and an outer element, of which the formerconstitutes the bearing of the shaft and penetrates the latter and thelatter penetrates the bracket and is adapted to be made rigid therewith;a standard swivel-mounted and also adapted to be adjusted horizontallyon the base-frame; means for rotating it about the swivel-axis a sleeveadjustably secured in the standard transverse to the swivel-axis; aspindle longitudinally guided in the sleeve, and means for advancing andretracting it.

In testimony whereof I have hereunto set my hand, at Chicago, Illinois,in the presence of two witnesses, this 19th day of November, A. D. 1900.

FRANK L. SMITH.

In presence of- OHAs. S. BURTON, ADNA H. BOWEN, J r.

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